Receiver sight for army rifles



n 7 m p 0 Rw M u O 9 TH J 0 N. mm 11 I. m mm a w w. J. SUTTON RECEIVERSIGHT FOR ARMY RIFLES Flled May 7 1928 June 9, 1931.

Patented June 9, 1931 UNITED STATES PATENT OFFICE RECEIVER SIGHT FORARMY RIFLES Application filed May 7, 1928.

This invention relates to an improved receiver sight for the U. S. Armyrifle Springfield model 1903 and the Krag rifle model 1898.

The purpose of this invention is to provide a sight for the abovementioned rifles that is mounted without drilling holes or reshaping anypart of the rifle.

The present available sights that are adapt 16 able to be mounted onthese guns require that one or more holes be drilled in the hardenedmetal of the receiver of the gun or that the receiver be cut away andreshaped to fit the sight or both. To one skilled in the art it isobvious that this would require the services of a skilled mechanic.

My invention resides in utilizing an already existing hole in thereceiver of these guns to mount a specially designed sight.

In mounting my sight on the U. S. Army rifle Springfield model 1903 Ipreserve all the functions of the gun as originally intended and furnisha sight that meets all the requirements of modern shooting.

To more fully comprehend my invention recourse is had to the drawings inwhich:

Fig. 1 is a fragmentary view of a U. S. Army rifle Springfield model1903 showing my sight in place.

Fig. 2 is a section on line 2-2 of Fig. 1.

Fig. 3 is a section on line 3-3 of Fig. 2.

Fig. 4 is a fragmentary view showing how the sight is mounted on a U. S.Army rifle Krag model 1898, and

Fig. 5 is a section on line 5-5 of Fig. 4.

In the drawings the stock of the rifle is designated by numeral 1, thereceiver by 2 and the bolt by 3. My sight in its entirety is shown at 4.

To mount my sight I withdraw the pin 6 which holds the magazine cut outin place. I then discard the cut out and substitute my sight in itsplace. The same pin 6 is returned to its original hole and passesthrough hole 6 drilled in the base 16 of the sight 4. The base 16 isdesigned and shaped to fit into the space left by discarding themagazine cut out.

My sight comprises the usual peep hole 10 in the disk 11 and has anadjustment screw Serial No. 275,720.

12 to provide for wind correction. It also has a range adjustment screw13 which is adapted to raise and lower the sight by means of a slottedcasing 14 which fits over a cylindrical shoulder 15. The shoulder 15 ispart of the base 16 and is internally threaded to receive the screw 13.

To preserve the original bolt stops of the magazine out out I providepins 20 and 21 which extend beyond the base 16 and engage theprojections on the bolt in the same manner as the stops on the originalmagazine cut out. As a means of yieldingly holding pins 20 and 21 inposition I drill a hole 22 from end to end of the base 16 and insert aspring 23 therein. 55 At each end of the spring I provide balls 24 whichare yieldingly forced into annular grooves 25 cut in pins 20 and 21.This construction provides a means whereby the pins are held in positionbut may be withdrawn at any suitable time for purposes of letting thebolt pass as desired.

In operation the pins would be manipulated as follows: To use the gunwith the magazine cut out, that is as a single shot gun, the pin 20would be pushed into position. To use with the magazine in effect pin 20would be withdrawn to allow the bolt to pass and engage pin 21. Towithdraw the bolt both pins 20 and 21 would be withdrawn.

The method of holding the sight rigid consists in drilling and tappingholes 30 and 31 in the base 16 and inserting therein running threadedscrews 32 and 33 with slotted heads. These screws bear upon the receiverand serve as a means of truing up the base and of holding it solidly inplace. The pin 6 is held in place by a similar screw 35.

This completes the description of my sight as applied to a Springfieldrifle.

The application of the sight to a Krag is more easily accomplished. Inthis case the magazine cut-out is withdrawn and discarded as before. Thesame sight 4 is used and 5 is mounted on a base 16' which is shaped tofit the space left by removing the magazine cut out. The same pin 6 maybe used or a new pin 40 may be rigidly attached to the base 16 andinserted in the hole left by discarding pin 6. A screw 41 provides thenecessary locking means to hold the sight solidly in place.

The foregoing description applies to the one embodiment of my idea asshown in the drawings, but since the sight itself is capable of many andvaried modifications and since the method of reducing my idea topractice, can be done in many different ways, I reserve the right tosuch modifications and refinements as come within the purview of theappended claims.

I claim:

1. In combination, a gun of the character described provided With a holein the receiver, a pin adapted to enter said hole said pin originallycarrying the magazine cut out, a sight adapted to be rigidly mounted onsaid pin and replace the magazine cut out.

2. A structure as specified in claim 1, said sight being suitablyequipped with adjustable stop pins to perform the functons of thediscarded magazine cut out.

3. A structure as specified -in claim 1, said sight having means fortruing and looking it solidly in place.

4. A sight for a gun of the character de scribed, including a baseadapted to be fixedly mounted in place of the magazine cut out on saidgun and having a hole adapted to receive the pin originally holding saidmagazine cut out; andlneansigr truingcand hold;

ing -said b ase rigidly igplasie.

5. A structure as specified in claim 4 with pins arranged in said baseand adapted to perform the functions of the replaced magazine cut out.

In testimony whereof, I have hereunto set my hand at San Francisco,California, this 3rd day of May 1928.

WALTER JOSEPH SUTTON.

